CBSE IX Physics Assessment Test PDF

CBSE-IX ASSESSMENT TEST PHYSICS BIOLOGY CBSE_IX_-ASSESSMENT TEST- MOTION _QP Time: 45 Mins Max. marks: 20 M...

CBSE-IX ASSESSMENT TEST PHYSICS BIOLOGY CBSE_IX_-ASSESSMENT TEST- MOTION _QP Time: 45 Mins Max. marks: 20 M SECTION-A (1X4=4M) 1. Rajeev went from Delhi to Chandigarh and returned to Delhi on his motorbike. The odometer of that read 4200 km at the start of trip and 4460 km at the end of his trip. If Rajeev took 4 h 20 min to complete his trip, then find the average velocity in km/h. 1) zero 2) 60 km/h 3) 6 km/h 4) 180 km/h 2. What does the path of an object look like when it is in a uniform motion? 1) Straight 2) Curved 3) Zig-zag 4) Circular 3. Match the Column I with Column II and choose appropriate option from the codes given below: Column I (Acceleration) Column II (Example) Motion of freely falling A In the direction of motion 1. body Against the direction of Car moves through B 2. motion congested market C Uniform 3. Brakes applied to Train starts moving from D Non-uniform 4. a station Codes 1) A-1, B-2, C-3, D-4 2) A-3, B-2, C-1, D-4 3) A-4, B-3, C-1, D-2 4) A-2, B-4, C-1, D-3 4. Assertion(A): Displacement of an object may be zero even if the distance covered by it is not zero. NARAYANA GROUP OF SCHOOLS 1 CBSE-IX ASSESSMENT TEST PHYSICS BIOLOGY Reason(R) : Displacement is the shortest distance between the initial and final position. 1) Both A and R are true and R is the correct explanation of A. 2) Both A and R are true but R is not the correct explanation of A. 3) A is true but R is false. 4) A is false but R is true. SECTION-B (2X2=4M) 5. What is the nature of the distance-time graphs for uniform and non-uniform motion of an object? 6. The odometer of a car reads 2000 km at the start of a trip and 2400 km at the end of the trip. If the trip took 8 h, calculate the average speed of the car in kmh-1 and ms–1. SECTION-C (1X3=3M) 7. State which of the following situations are possible and give an example for each of these: i) an object with a constant acceleration but with zero velocity ii) an object moving with an acceleration but with uniform speed. iii) an object moving in a certain direction with an acceleration in the perpendicular direction. SECTION-D (1X5=5M) 8. Suppose a squirrel is moving at a steady speed from the base of a tree towards some nuts. It then stays in the same position for a while, eating the nuts, before returning to the tree at the same speed. A graph can be plotted with distance on the x-axis and the time on y-axis. observe the graph carefully and answer the following questions. NARAYANA GROUP OF SCHOOLS 2 CBSE-IX ASSESSMENT TEST PHYSICS BIOLOGY i) Which part of the graph shows the squirrel moving away from the tree? ii) Name the point on the graph which is 6 m away from the base of the tree. iii) Which part of the graph shows that the squirrel is not moving? iv) Which part of the graph shows that the squirrel is returning to the tree? v) Calculate the speed of the squirrel from the graph during its journey. SECTION-E (1X4=4M) 9. Any change in the velocity of an object results in an acceleration by increasing speed, decreasing speed or changing direction. Yes, that's right, a change in the direction of motion results in an acceleration even if the moving object neither speed up nor slowed down. That's because acceleration depends on the change in velocity and velocity is a vector quantity; one with both magnitude and direction. Thus, a falling apple accelerates, a car stopping at a traffic light accelerates and the moon in orbit around the Earth accelerates. Hence, acceleration occurs anytime an object's speed increases or decreases, or it changes direction. i) Define Acceleration. (1M) ii) A car accelerates uniformly from 18 km/h to 36 km/h in 5 minutes. Find the acceleration. (1M) iii) A) Distinguish between acceleration and deceleration. (2M) (OR) B) Give any two examples for deceleration. *** ALL THE BEST *** NARAYANA GROUP OF SCHOOLS 3